<template>
  <view class="cart-container" v-if="cart.length!=0">
    <!-- 收获地址组件 -->
    <my-address></my-address>
    
    <!-- 商品列表的标题区域 -->
    <view class="cart-title">
      <!-- 左侧的图标 -->
      <uni-icons type="shop" size="18"></uni-icons>
      <!-- 右侧的文本 -->
      <text class="cart-title-text">购物车</text>
    </view>
    
    <!-- 循环渲染购物车中的商品信息 -->
    <uni-swipe-action>
      <block v-for="(goods,i) in cart" :key="i">
        <!-- 滑动删除配置配置 -->
      <uni-swipe-action-item :right-options="options" @click="SwipeItemClickHandler(goods)">
         <my-goods :goods="goods" :showRadio="true" @radio-change='radioChangeHandler' :showNum="true" @num-change='numberChange'></my-goods>
      </uni-swipe-action-item>
       </block>
    </uni-swipe-action>
    
    <!-- 使用自定义的结算组件 -->
    <my-settle></my-settle>
  </view>
  
  <!-- 空白购物车的区域 -->
  <view class="empty-cart" v-else>
    <image src="../../static/cart_empty@2x.png" class="empty-img"></image>
    <text class="tip-text">空空如也~</text>
  </view>
</template>

<script>
  //进行导入公共作用进行定义的方法js文件
  import badgeMix from "../../mixins/tabbar-badge.js"
  import {mapState,mapMutations} from "vuex"
  export default {
    //进行挂载
    mixins:[badgeMix],
    computed:{
      //获取到加入购物车中的商品信息
      ...mapState('m_cart',['cart'])
    },
    data() {
      return {
        options:[
                {
                    text: '删除',
                    style: {
                        backgroundColor: '#C00'
                    }
                }
              ]
      }
    },
    methods:{
      ...mapMutations('m_cart',['updateGodsState','updateGoodsCount','removeGoodsById']),
      radioChangeHandler(e){
        this.updateGodsState(e)
      },
      // 商品数量购买的数量的变化
      numberChange(e){
       this.updateGoodsCount(e)
      },
      //进行点击了滑动操作的按钮
      SwipeItemClickHandler(goods){
        this.removeGoodsById(goods.goods_id)
      }
    }
  }
</script>

<style lang="scss">
  .cart-container{
    padding-bottom: 50px;
  }
  .cart-title{
    height: 40px;
    display: flex;
    align-items: center;
    padding: 5px;
    border-bottom: 1px solid #efefee;
   .cart-title-text{
     font-size: 14px;
     margin-left: 10px;
   }
}

 .empty-cart{
     display: flex;
     flex-direction: column;
     align-items: center;
     padding-top: 150px;
     .empty-img{
       width: 90px;
       height: 90px;
     }
     .tip-text{
       font-size: 12px;
       color: gray;
       margin-top: 15px;
     }
   }
</style>
